Crane with anti-falling function for municipal road construction

Abstract

The municipal road construction crane with the anti-falling function comprises a supporting frame, a U-shaped plate is connected to the surface of the supporting frame in a sliding mode, a pair of receding holes are formed in the surface of the U-shaped plate, a sliding rod is connected to the inner wall of the U-shaped plate in a sliding mode, a C-shaped plate is fixedly connected to the bottom end of the sliding rod, and the C-shaped plate is fixedly connected to the bottom end of the sliding rod. And a lifting hook box is mounted below the C-shaped plate. When the sliding rod ascends, the metal sheet is driven to be tightened, the trapezoidal anti-falling plate in the through hole is pulled to move in the direction away from the triangular plate through the moving plate and the connecting rod to avoid, and if the winding roller slips due to overload when the gear motor is used, the sliding rod suddenly descends to drive the tensioned metal sheet to reset. The sliding rod drives the moving plate and the connecting rod to rotate by taking the connecting shaft as the center, and the connecting rod pushes the trapezoidal anti-falling plate to approach to the triangular plates, so that the trapezoidal anti-falling plate is clamped with the pair of triangular plates, emergency braking is performed, and the lifting hook box is prevented from slipping and falling off.

Description

TECHNICAL FIELD

[0001] The utility model relates to crane equipment technical field especially relates to a municipal road construction crane with prevent falling function. BACKGROUND

[0002] Crane refers to the vertical lifting and horizontal handling of heavy objects in a certain range of multi-action hoisting machinery. It is also known as the overhead crane, hang or crane. The crane is diverse, including the tire crane and bridge crane.

[0003] When using the crane to hoist, when the weight exceeds the lifting load bearing range, it will produce slip and fall, which will damage the safety of personnel and the hoisted weight. At the same time, the existing crane is generally large in size and not suitable for small space. In view of the above problems, a municipal road construction crane with anti-falling function is needed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a municipal road construction crane with anti-falling function.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A municipal road construction crane with anti-falling function, comprising a support frame, the surface of the support frame is slidably connected with a U-shaped plate, a pair of avoiding holes are formed in the surface of the U-shaped plate, the inner wall of the U-shaped plate is slidably connected with a slide rod, the bottom end of the slide rod is fixedly connected with a C-shaped plate, a hook box is installed below the C-shaped plate, and a anti-falling mechanism is installed on the surface of the slide rod.

[0007] The anti-falling mechanism comprises a metal sheet fixedly connected to the surface of the slide rod, the upper surface of the metal sheet is fixedly connected with the surface of the U-shaped plate, the surface of the support frame is fixedly connected with a plurality of triangular plates, a pair of through holes are formed in the surface of the U-shaped plate, and a trapezoidal anti-drop plate is installed on the inner wall of each through hole.

[0008] Preferably, the inner wall of the C-shaped plate is rotatably connected with a pair of movement plates, the inner wall of the U-shaped plate is rotatably connected with a connecting shaft, and the surface of the connecting shaft is fixedly connected with the inner wall of the movement plate.

[0009] Preferably, the surface of the connecting shaft is fixedly connected with a connecting rod, and the bottom end of the connecting rod is rotatably connected with the surface of the trapezoidal anti-drop plate.

[0010] Preferably, the inner wall of the C-shaped plate is slidably connected with a positioning pin, one end of the positioning pin is inserted and fixed to the inner wall of the hook box, and a spring is sleeved on the surface of the positioning pin, one end of the spring is fixedly connected to the surface of the positioning pin, and the other end of the spring is fixedly connected to the surface of the C-shaped plate.

[0011] Preferably, the surface of the support frame is fixedly connected with multiple L-shaped plates, the inner walls of the multiple L-shaped plates are slidably connected with U-shaped frames, the inner walls of the U-shaped frames are rotatably connected with movable wheels, and the inner walls of the L-shaped plates are threadedly connected with threaded rods, the bottom end of the threaded rods being rotatably connected to the upper surface of the U-shaped frames.

[0012] Preferably, a geared motor is fixedly connected to the upper surface of the support frame, a winding roller is rotatably connected to the inner wall of the support frame, a drive wheel is fixedly connected to the output end of the geared motor, a driven wheel is fixedly connected to one end of the winding roller, and belts are fitted onto the surfaces of the drive wheel and the driven wheel.

[0013] Preferably, a steel rope is wound and fixed on the surface of the winding roller, and the bottom end of the steel rope passes through the surface of the support frame and is fixedly connected to the top end of the slide bar.

[0014] The beneficial effects of this utility model are as follows:

[0015] When the slide bar rises, it causes the metal sheet to tighten. Through the moving plate and connecting rod, it pulls the trapezoidal anti-detachment plate in the through hole to move away from the triangular plate to avoid it. If the geared motor is overloaded during use and causes the winding roller to slip, the slide bar will suddenly drop and cause the tensioned metal sheet to reset. The slide bar will drive the moving plate and connecting rod to rotate around the connecting shaft. The connecting rod will push the trapezoidal anti-detachment plate closer to the triangular plate, so that the trapezoidal anti-detachment plate and a pair of triangular plates are engaged to perform emergency braking and prevent the hook box from slipping and falling. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a municipal road construction crane with anti-fall function proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the U-shaped plate in a municipal road construction crane with anti-fall function proposed in this utility model.

[0018] Figure 3 This utility model proposes a municipal road construction crane with anti-fall function. Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This utility model proposes a municipal road construction crane with anti-fall function. Figure 2 Enlarged structural diagram at point B;

[0020] Figure 5 This is a cross-sectional view of the L-shaped plate in a municipal road construction crane with anti-fall function proposed in this utility model.

[0021] In the diagram: 1. Support frame; 2. Hook box; 3. Winding roller; 4. Gear motor; 5. U-shaped plate; 6. Triangular plate; 7. Driven wheel; 8. Belt; 9. Drive wheel; 10. Slide rod; 11. Trapezoidal anti-detachment plate; 12. Connecting rod; 13. Moving plate; 14. Steel rope; 15. Metal sheet; 16. Spring; 17. C-shaped plate; 18. Positioning pin; 19. L-shaped plate; 20. Moving wheel; 21. Threaded rod; 22. U-shaped frame; 23. Through hole; 24. Clearance hole; 25. Connecting shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-5 A municipal road construction crane with anti-fall function includes a support frame 1, a U-shaped plate 5 slidably connected to the surface of the support frame 1, a pair of clearance holes 24 opened on the surface of the U-shaped plate 5, a slide rod 10 slidably connected to the inner wall of the U-shaped plate 5, a C-shaped plate 17 fixedly connected to the bottom end of the slide rod 10, a hook box 2 installed below the C-shaped plate 17, and an anti-fall mechanism installed on the surface of the slide rod 10.

[0024] The anti-fall mechanism includes a metal sheet 15 fixedly connected to the surface of the slide bar 10. The upper surface of the metal sheet 15 is fixedly connected to the surface of the U-shaped plate 5. Multiple triangular plates 6 are fixedly connected to the surface of the support frame 1. A pair of through holes 23 are opened on the surface of the U-shaped plate 5. Trapezoidal anti-fall plates 11 are installed on the inner walls of the pair of through holes 23.

[0025] By setting the clearance hole 24, the triangular plate 6 is given space clearance when the U-shaped plate 5 moves. By setting the C-shaped plate 17, the installation support of the moving plate 13 is maintained. By setting the hook box 2, the heavy object is lifted. By setting the slide rod 10, the angle position of the moving plate 13 is adjusted. By setting the metal plate 15, when the metal plate 15 is reset, it drives the slide rod 10 to descend. By setting the triangular plate 6, it is engaged with the trapezoidal anti-detachment plate 11 to provide emergency safety protection in case of falling and ensure safety.

[0026] In this utility model, a pair of moving plates 13 are rotatably connected to the inner wall of the C-shaped plate 17, and a connecting shaft 25 is rotatably connected to the inner wall of the U-shaped plate 5. The surface of the connecting shaft 25 is fixedly connected to the inner wall of the moving plate 13.

[0027] By setting the motion plate 13 and the connecting shaft 25, the connecting rod 12 is driven to move together.

[0028] In this utility model, a connecting rod 12 is fixedly connected to the surface of the connecting shaft 25, and the bottom end of the connecting rod 12 is rotatably connected to the surface of the trapezoidal anti-detachment plate 11.

[0029] By setting up the connecting rod 12, the connecting rod 12 can push the connected trapezoidal anti-detachment plate 11 towards the triangular plate 6 for emergency protection.

[0030] In this utility model, a positioning pin 18 is slidably connected to the inner wall of the C-shaped plate 17. One end of the positioning pin 18 is inserted and fixed to the inner wall of the hook box 2. A spring 16 is sleeved on the surface of the positioning pin 18. One end of the spring 16 is fixedly connected to the surface of the positioning pin 18, and the other end of the spring 16 is fixedly connected to the surface of the C-shaped plate 17.

[0031] The locating pin 18 is used to limit the installation of the hook box 2, and the spring 16 is used to prevent the locating pin 18 from slipping out, thus ensuring safety.

[0032] In this utility model, a plurality of L-shaped plates 19 are fixedly connected to the surface of the support frame 1, and a U-shaped frame 22 is slidably connected to the inner wall of each of the plurality of L-shaped plates 19. A movable wheel 20 is rotatably connected to the inner wall of the U-shaped frame 22, and a threaded rod 21 is threadedly connected to the inner wall of the L-shaped plate 19. The bottom end of the threaded rod 21 is rotatably connected to the upper surface of the U-shaped frame 22.

[0033] By setting the movable wheel 20, the support frame 1 is moved. By setting the threaded rod 21, the height of the movable wheel 20 is adjusted. When the hook box 2 is in operation, the movable wheel 20 is stored in the L-shaped plate 19.

[0034] In this utility model, a reduction motor 4 is fixedly connected to the upper surface of the support frame 1, a winding roller 3 is rotatably connected to the inner wall of the support frame 1, a drive wheel 9 is fixedly connected to the output end of the reduction motor 4, a driven wheel 7 is fixedly connected to one end of the winding roller 3, and a belt 8 is sleeved on the surface of the drive wheel 9 and the driven wheel 7.

[0035] By setting a reduction motor 4, the driving wheel 9 is driven to rotate. By setting a belt 8, the driven wheel 7 is driven to rotate. By setting a winding roller 3, the steel rope 14 is wound and stored.

[0036] In this invention, a steel rope 14 is wound and fixed on the surface of the winding roller 3, and the bottom end of the steel rope 14 passes through the surface of the support frame 1 and is fixedly connected to the top end of the slide rod 10.

[0037] By setting the steel rope 14, the height position of the slide bar 10 is changed, which in turn causes the height position of the hook box 2 to change.

[0038] Working principle: In use, after pushing the support frame 1 to the appropriate position, rotating the threaded rod 21 drives the U-shaped frame 22 to rise, so that the moving wheel 20 is housed in the L-shaped plate 19. At this time, the lower surface of the support frame 1 remains in stable contact with the ground. Start the reduction motor 4 to drive the drive wheel 9 to rotate. The drive wheel 9 drives the driven wheel 7 and the winding roller 3 to rotate through the belt 8, so that the steel rope 14 and the hook box 2 rise as a whole. After the hook box 2 raises the hoisted object, the external transport vehicle can move to the bottom of the hook box 2. When the slide rod 10 rises, it drives the metal plate 15 to tighten. At this time, the moving plate 13 and the connecting rod 12 rotate, pulling the trapezoidal anti-detachment plate 11 in the through hole 23 to move away from the triangular plate 6 to avoid it. Then The control geared motor 4 drives the winding roller 3 to reverse, placing the object on the hook box 2 onto the transport vehicle. If the geared motor 4 is overloaded, the winding roller 3 will slip, and the hook box 2 and the slide rod 10 will descend rapidly under the action of gravity. At this time, the slide rod 10 will suddenly descend, causing the tensioned metal plate 15 to reset. The slide rod 10 will drive the moving plate 13 and the connecting rod 12 to rotate around the connecting shaft 25, causing the connecting rod 12 to push the trapezoidal anti-detachment plate 11 towards the triangular plate 6. The trapezoidal anti-detachment plate 11 and a pair of triangular plates 6 will engage to perform emergency braking and prevent the hook box 2 from slipping and falling. Through the above structure, the support frame 1 contacts the ground, saving space and preventing the hook box 2 from falling during lifting operations.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A municipal road construction crane with anti-falling function, comprising a support frame (1), characterized in that, The surface of the support frame (1) is slidably connected with a U-shaped plate (5), a pair of avoiding holes (24) are formed in the surface of the U-shaped plate (5), the inner wall of the U-shaped plate (5) is slidably connected with a sliding rod (10), the bottom end of the sliding rod (10) is fixedly connected with a C-shaped plate (17), the lower part of the C-shaped plate (17) is provided with a hook box (2), and the surface of the sliding rod (10) is provided with an anti-falling mechanism. The anti-falling mechanism comprises a metal sheet (15) fixedly connected to the surface of the sliding rod (10), the upper surface of the metal sheet (15) is fixedly connected with the surface of the U-shaped plate (5), the surface of the support frame (1) is fixedly connected with a plurality of triangular plates (6), a pair of through holes (23) are formed in the surface of the U-shaped plate (5), and a pair of trapezoidal anti-falling plates (11) are mounted on the inner walls of the through holes (23).

2. The municipal road construction crane with anti-falling function according to claim 1, characterized in that, The inner wall of the C-shaped plate (17) is rotatably connected with a pair of movement plates (13), the inner wall of the U-shaped plate (5) is rotatably connected with a connecting shaft (25), and the surface of the connecting shaft (25) is fixedly connected with the inner wall of the movement plate (13).

3. The municipal road construction crane with anti-falling function according to claim 2, characterized in that, The surface of the connecting shaft (25) is fixedly connected with a connecting rod (12), and the bottom end of the connecting rod (12) is rotatably connected with the surface of the trapezoidal anti-falling plate (11).

4. The municipal road construction crane with anti-falling function according to claim 1, characterized in that, The inner wall of the C-shaped plate (17) is slidably connected with a positioning pin (18), one end of the positioning pin (18) is insertedly fixed with the inner wall of the hook box (2), the surface of the positioning pin (18) is sleeved with a spring (16), one end of the spring (16) is fixedly connected with the surface of the positioning pin (18), and the other end of the spring (16) is fixedly connected with the surface of the C-shaped plate (17).

5. The municipal road construction crane with anti-falling function according to claim 1, characterized in that, The surface of the support frame (1) is fixedly connected with a plurality of L-shaped plates (19), the inner walls of the plurality of L-shaped plates (19) are slidably connected with U-shaped frames (22), the inner walls of the U-shaped frames (22) are rotatably connected with moving wheels (20), the inner walls of the L-shaped plates (19) are threadedly connected with threaded rods (21), and the bottom ends of the threaded rods (21) are rotatably connected with the upper surfaces of the U-shaped frames (22).

6. The municipal road construction crane with anti-falling function according to claim 1, characterized in that, The upper surface of the support frame (1) is fixedly connected with a speed reducer motor (4), the inner wall of the support frame (1) is rotatably connected with a winding roller (3), the output end of the speed reducer motor (4) is fixedly connected with a driving wheel (9), one end of the winding roller (3) is fixedly connected with a driven wheel (7), and the surfaces of the driving wheel (9) and the driven wheel (7) are sleeved with a belt (8).

7. The municipal road construction crane with anti-falling function according to claim 6, characterized in that, The surface of the winding roller (3) is fixedly wound with a steel rope (14), and the bottom end of the steel rope (14) penetrates through the surface of the support frame (1) and is fixedly connected with the top end of the sliding rod (10).

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